Originally posted by RichBa5tard Hmmm... i have two of those papst fans on my rheobus. At ~5V one of them sometimes won't start. I think you'd be safer running them at 7V.

The multi connector only allows 5 or 12 V, I must say they make the most noise in my system when i don't use any 80 mm case fans my system is almost completely silent, my Zalman PSU, 7000A Cu and Zalman videocard cooler with optional fan make no noise.

I just tested them on 5 V, the papst turns so slowly that there is almost no airflow, the noise must come from in the case, has anyone a solution. Out side the case at 12 v they make no noise at all, has anyone a solution, the case is a Lian-Li 6070 so it is already equiped with dampening material, although I think it could use a lot more.